Concrete pile



Feb. 26, 1929.

. c. E. FowLER CONCRETE PILE Filed July 14, 1925 n NUIIIIIM FIJ-ankh" "nllllhvdllh BY Qua rg ATroRNEYs Patented Feb. 26, 1929.

CHARLES EVAN FOWLER, OF NEWYORK, Y.

Y CONCRETE PILE.

Appncation inea my 14', 1925. serial No. 43,5817.

My invention relates to a concrete pile and particularly to a 'pile so formed to have increased holding attributes when driven as well as possessing a form to driving or bendingvstresses when being driven.

An important object of my inventionis to provide a concrete pile so formed as to have an increased lateral frictional surface where` by to resist any loosening tendencies Iand thereby to lend stabilit-y to thefpile when driven.

A further object of the invention is to provide a concrete pile having a formation at the upper portion of a character to resist. blows and force exerted thereon in drivi g the pile and at the same time equipped with a loweil portion to readily enter the ground'.V

The nature of the invention and its distinguishing features and advantages will clearly appear as the description proceeds.

Reference is to be had to the accompanying drawings forming a part of this specilica'tion, it being understood that the drawings are merely illustrative of practical examples of the invention.

Figure 1 is a side elevation of a concrete pile formed in accordance with my invention;

Figure 2 is an enlarged plan view thereof;

Figure 3 is av cross section on the line 3&3, Figure l;

Figure 4 is a side elevation modified as to the distance to which the upper portion is carried along the pile; v

Figure 5 is an elevation of the lower portion of the concrete pile modified as herein-` after explained. Y

In carrying out my invention in the form shown in Figures 1 to 3, theupper portion 10 of the pile is formed of a polygonal cross section and solid. The solid polygonal section extends comparatively a short distance sufficient to resist the. blows and bending stresses in the region of the upper port-ion of the pile. The lower portion of the pile below the hea-d 10 is cruciform in cross section as shown best in Figure 3, whereby the pile presents two webs 12 at right angles or approx"- mately so, and integral with a solid central portion 13. The bottom edges ofthe webs 12 are sharpened as at 14. Inthe pile as formed in Figures l to 8 the lower sharpened edges 14 of the respective webs 12 terminate in the same plane whereas in Figure 5 the pile is formed with transverse webs 112 at right angles to each other following the `general cruciform shape of the first-mentioned form Y'of the pile,

but in the form of Figure 5, the webs 112 integralwith a central solidportiou 113 terminate web Vv112 extending below the other as will be clear from an explanation ot' Figure 5; The webs l2 have in practice vertical reinforcing rods 15 and also the head or polygonal upper portion 1() has additional reinforcing elements 16 adjacent to each side face thereof.

as at 114 in different planes, the one Y In the form shown in Figure 4 the solid polygonal upper portion 110 corresponding in purpose and mode of functioning with the head 10 extends to a greater distance yalong the pile so that the lower end of saidA head ex tends below the ground. The p carrying down of the solidY greater length as shown in Figure'4 than the fori Y shown in Figure l, resists the .bending stresses to a greater degree than the mere driving head 10. In Figure 4 the numeral 212 indicates the webs which, owing to the carrying down of the head 110, are shorter than the webs 12.` The numeral 14 indicates the sharpened lower cutting edges of the webs 212, said lower edges corresponding with the edges in Figure 1.

Shoes, in practice, may be provided on the lower cutting edges of the piles of any one of the forms described and illustrated. In Figure 5, the numeral 17 indicates the shoes on--the lower edges of the webs and present cutting edges to cut through stiff material.

It will readily be understood that with a concrete pile having the cruciform cross section and the central solid portion, the maxi mum lateral friction surface is provided whereby to exert a holding action on the pile when in the ground. Moreover, the shar ened edges 14 and the shoes enable the pile to be readily driven into the ground resistant of the driving of concrete piles of ordinary form.

It is to be noted that, as best shown in Figure 2, the head 10is polygonal, and specifically said head is octagonal. Also it will be noted that the faces disposed at the top and bottom of Figure 2 are broader than the two lateral faces in planes at right angles to said top and bottom faces. The faces `represented at the ton and bottom of Figure 2 are in practice disposed at the front and back so as t0 take the bending stresses of waves or tides, for example. The broad frontend back surfaces thus yprovided permit of reinforcing members being disposed in a series, in la plane substantially parallel polygonal portion to a. c

Vembodiment of strength in the pile.

I would state furthermore that while the illustrated examples constitute practical embodiments of my invention, I do not limit myself strictly vto the exact details herein illustrated, since, manifestly, the ysame can be considerably varied without departure'from thespiritof the invention as defined in the appended claims.

Having thus described my invention, I claim:

l. A concrete pile having a lower portion cruciform in cross section, and a solid driving head at the upper portion and extending laterally outward'over said crucii'orm lower portion to receive driving blows and protect said lower portion.

2. A concrete pile cruciform 1n cross section in its lower portion to present transverse webs at approximately right angles to each other, the lower ends of said webs being individually sharpened, the upper portion of said pile being solid.

3. A concrete pile crueiform in cross section in its lower portion to p'resent transverse webs at approximately right angles to each other, the lower end of each of said webs being sharpened and the said sharpened ends taperingl from opposite sides,`the upper portion of said'pile being solid and of polygonal cross section. f Y

4. A concrete pile having a lower portion crucifo'rin in cross section to present webs al approximately right angles to each other1 said webs having Vtherein vertical reinforcing rods, the upper portion of said pile being solid and having vertical reinforcing rods additional to the iirstementioned reinforcing rods and terminating at said head.

5. A concrete pile having webs extending laterally along the lower portion of the pile at angles to eachother, the lower edges of said webs presenting transverse individual cutting edges, said cutting 'edges alining in pairs.

'l CHARLES EvANrowLnR. f 

